Custom Transformers

Precision-Engineered Custom Transformers

Control Transformer’s custom-built transformers deliver superior performance and reliability across multiple industries.

Whether you need auto, isolation or Scott transformers, Control Transformer offers both convection-cooled and water-cooled transformer options to meet your specific voltage and power requirements. Every transformer is engineered with precision and built to the highest standards, ensuring efficiency and durability in even the most demanding environments.

As with all our products, our transformers are fully customizable. We build each product to fit our customers’ exact needs, including specifications for power, size, industry and more.

Frequency range: 50 – 400 Hz standard; high frequency as requested
Built to UL / ANSI C57 construction and performance standards
Rugged construction with VPI varnish, treatments and framing

Epoxy encapsulation available for all products
Water-cooled efficiency – reduced unit size for high-power applications
Cost-effective dry-type – affordable alternative to oil-filled transformers for lower voltage applications

Dry-type Isolation Transformers

Single-phase / Three-phase / Scott-connected
50 / 60 / 400 Hz standard – high frequency as requested
1 KVA to 5000 KVA / 1 Volt to 15KV
K factor / High current / High voltage / High reactance / Special impedance / Harmoni c/ Shielded / Multiple load winding/ Multiple tapped / Rectifier / Epoxy-encapsulated
6-pulse / 12- pulse / 18-pulse / 24-pulse / PWM / High efficiency / Low loss
Copper or aluminum windings
Standard core material – M6 / 29 ga. grain-oriented electrical steels / additional higher efficiency materials available
Standard Nema or special enclosures available
Fully customizable to customer specifications

Dry Auto Transformers

Single-phase / Three-phase
50 / 60 / 400 Hz standard – high frequency as requested
1 KVA to 5000 KVA- Higher depending on voltage range/ 1 volt to 15KV
K factor / High current / High voltage / Multiple load winding / Multiple tapped / Epoxy-encapsulated
Copper or aluminum windings
Standard core material – M6 / 29 ga. grain-oriented electrical steels
Standard Nema or special enclosures available
Fully customizable to customer specifications

Water-cooled Isolation Transformers

Single-phase / Three-phase / Scott-connected
50 / 60 / 400 Hz standard – high frequency as requested
1 KVA to 5000 KVA / 1 volt to 15KV
K factor / High current / High voltage / High reactance / Special impedance / Harmonic / Shielded / Multiple-load winding / Multiple tapped / Rectifier / Epoxy-encapsulated /
6-pulse / 12-pulse / 18-pulse / 24-pulse / PWM / High efficiency / Low loss
Brood ranges of tubing available / Epoxy-encapsulated coils
Standard core material – M6 / 29 ga. grain-oriented electrical steels / Additional higher-efficiency materials available
Standard Nema or special enclosures available
Fully customizable to customer specifications

Water-cooled Auto Transformers

Single-phase / Three-phase
50 / 60 / 400 Hz standard – high frequency as requested
1 KVA to 5000 KVA – higher depending on voltage range / 1 volt to 15KV
K factor / High current / High voltage / Multiple load winding / Multiple tapped / Epoxy-encapsulated
Brood ranges of tubing available / Epoxy-encapsulated coils
Standard core material – M6 / 29 ga. grain-oriented electrical steels
Standard Nema or special enclosures available
Fully customizable to customer specifications

Custom Engineered

Tailored to meet exact specifications, in collaboration with each client

UL C57 Compliance

Built with premium materials that meet industry standards

Reliable Performance

Less than 1% failure rate, 100% test approval before shipping

Water-Cooled Efficiency

Ideal for high-power applications such as heating

Cost-Effective Dry-Type

Affordable option for many industrial uses

1-Year Warranty

Coverage for one year from the date of shipment

Made in the USA

Proudly manufactured in our Ohio-based facility

Oil & Gas

Ensure safety and productivity needed for production, refinement and distribution

Aviation

Reliable power for aircraft and ground infrastructure, serving commercial and military markets

Mining

Transformers and reactors to withstand the most rugged underground environments

Induction Heating & Melting

Supply the power and frequency needed for various industrial and domestic heating applications

Renewable / Alternative Energy

Enable conversion, regulation, stability and transfer of power from renewable energy sources

Marine

Reliable transformers for hazardous marine environments, serving commercial and military markets

Electric Vehicles (EV)

Ensure efficiency in power conversion, charging infrastructure and vehicle power systems

Industrial & Manufacturing

Provide efficient power for a wide array of applications, from motors and drives to heavy machinery

Energy Storage

Facilitate the conversion, regulation and management of power in energy storage systems and grids

Control Transformer has consistently remained one of our most reliable suppliers over the years – providing us with a high-quality product, industry-leading engineering expertise and competitive lead times. By using Control Transformer products, we have ensured our projects’ success and maximize customer satisfaction.

Power Factor Correction Industry

Our organization has worked with Control Transformer for at least 50 years. In our challenging high-vibration application, where the quality of the product is paramount, we require the highest possible rating in the smallest possible package size, which requires a high level of customization. Their staff has always been very competent, courteous and professional in helping us to achieve success, promptly addressing our inquiries and concerns and providing us with first-class products that perform well in our application.

Mining Industry

Control Transformer has been a valued strategic partner and supplier to our organization for over 25 years. During this time working with the CTI team, I have worked with all team members, from design engineers to shipping personnel and everything in between. Everyone is engaged and supportive of the custom requirements and quality that our company demands from a strategic partner.

Motor Drives Industry

Control Transformer's long-tenured employees take great pride in service and workmanship, which shows in all aspects of the products they produce. Everyone from the president to production is just a phone call away. Issues, albeit rare, are always handled in a timely manner, and they can be on-site or on a call as we require. Control Transformer is a testament to how all businesses should be managed and operated to service their customer with quality products to meet the timelines of customer production.